Heat control device



Sept. 12, 1950 c..c. PRINCE HEAT con'mor. DEVICE Filed Nov, 12, 1947 .Re6 00 8 1 i 3. r w. .p e HG. Z 4/ r w 2% a 2 C 6 8 1 02 2 3 d, a fi ZATTCJ R N EYS Patented Sept. 12, 1950 UNITED STATES PATENT OFFICE2,522,464 HEAT CONTROL DEVICE Charles 0. Prince, Raleigh, N. '0.Application November 12, 1947, Serial No. 785,237

My present invention relates to an improved thermostatic oil flowcontrol of the type especially adapted for use with space heaters and soar- 1 Claim. (Cl. 236-459) ranged as to automatically cut off the flowof oil 4 of the conventional oil flow valve reaches a predeterbyactuation when the room temperature mined point.

.A more even control of the burner operation and resultant maintenanceof room temperature will bring about a saving in oil and also a morecomfortable temperature in the air of the room.

In the accompanying drawings I have illustrated one complete example ofthe physical embodiment of my invention according to the best mode Ihave thus far devised but it will be understood that various changes andalterations may be made in the exemplified structure within the scope ofthe appended claim.

In the drawings:

Fig. 1 is a top plan view of the device of my invention as used inconnection with an oil flow valve assembly.

Fig. 2 is a side elevational view of my device.

Fig. 3 is a transverse vertical sectional view.

Fig. 4 is a front elevational view.

Fig. 5 is a longitudinal vertical sectional view at line 5--5 of Fig. 3.

Fig. 6 is a horizontal sectional view at line 6-6 of Fig. 5.

Referring now to the drawings I have illustrated the present preferredembodiment of the structure of my invention as used with a conventionalvalve casing having a cover 2 and an oil tube fitting 4 and providedwith a valve stem actuator 6.

In my invention I employ an open bottom housing having a rear wall 8 andfront wall I0 formed with an aperture ll therein, and end walls [2 withcover l4.

A rearwardly extending flange I6 is normally secured by screws l8 to thevalve casing, and within the housing I utilize a transverse bar 20journaled in the walls of the housing and secured thereto rigidly is thethermostat arm 22 connected with the thermostat 24 of the bellows type.An actuator arm 26 abuts the thermostat and is positioned in the path ofits expansive movement at 28. A pivoted support bar 30 supports theactuator arm and its valve contact arm and is journaled at 32 in the endwalls of the housing.

A control bar 34 has a central U-crank 36 located under the thermostatarm 22 and the control bar is journaled at 38 in the end walls of thehousing. A cotter pin 48 secures the free end of the bar in position andthe other end has a control arm 42 formed with an inturned end 44movable under the indicia plate 46 on the exterior of one side wall ofthe housing. The inturned end 44 frictionally engages the side wall ofthe housing to retain the arm in the desired position after it has beenmoved to agree with the indicia plate 46. Thus if the control arm 42 isturned to move the thermostat closer to the arm 26 or further from thearm 26 the thermostat 24 will be caused to operate at a lower or highertemperature.

With the control bar set at the desired position to regulate the minimumtemperature to be maintained, the thermostat will expand under any risein temperature to rock the actuator arm and depress the valve contactarm to close the valve of the casing and shut off the supply of oil tothe burner. As the temperature declines and the thermostat contracts thecontact arm will raise allowing the oil to pass.

By this simple construction the desired constant temperature may bemaintained on any conventional type of space heater, and being simple inoperation and requiring no electrical connections may be installed andmaintained by the most inexperienced person.

Having thus fully described my invention what I claim as new and desireto secure by Letters Patent is:

In a control for use with an oil flow valve for space heaters having avalve stem actuator and said control having a box-like housing providedwith an open bottomadapted to receive the oil flow valve the improvementcomprising, a bar journalled in the housing transversely thereof, a heatresponsive element in the housing, an arm on one side of the elementrigid with the bar,

' an actuator arm within the housing abutting the element on theopposite side thereof, a pivoted support bar journalled transversely ofthe housing below but parallel to said first bar, and said support barbeing secured to and supporting said actuator arm, a control barjournalled transversely of the housing intermediate of and parallel withthe two first said bars, a central U-shaped crank in said control baradapted to abut the armon the element, a control arm on the outer end ofsaid control bar, adapted to coincide with indicia placed on the outsideof said housing,

I whereby when said control arm is adjusted in relation to said indiciathe crank in said control bar will engage the arm on said element toregulate the control of said oil flow valve.

CHARLES C. PRINCE.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,712,841 Powers et al May 14,1929 1,720,522 Ludwick July 9, 1929 1,873,124 Hill Aug. 23, 19322,120,669 Hill June 14, 1938 2,406,088 Martin Aug. 20, 1946 2,440,942Gilbert May 4, 1948

